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NOW Supplements Vitamin D-3
SCIENTIFIC SCORE
Moderately Effective
Based on 6 Researches
8.2
USERS' SCORE
Good
Based on 6 Reviews
8.6
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Vitamin D3 (as Cholecalciferol) (From Lanolin)
1,250 mcg (50,000 IU)
6250%

Top Medical Research Studies

8
Vitamin D benefits for insomnia
Efficacy of low-fat milk and yogurt fortified with encapsulated vitamin D on improvement in symptoms of insomnia and quality of life: Evidence from the SUVINA trial.
Direct study on insomnia treatment
We set out to explore the relationship between vitamin D and insomnia by examining how low-fat milk and yogurt fortified with 1,500 IU of nano-encapsulated vitamin D could improve sleep issues and overall quality of life.

In our analysis, we included adults with abdominal obesity and a history of insomnia, identifying twenty-nine participants through insomnia severity questionnaires. They were split into four groups: one receiving fortified low-fat milk, another with unfortified milk, a third group consuming fortified yogurt, and a fourth with unfortified yogurt. Over a ten-week period, we tracked changes in insomnia symptoms and quality of life.

Our findings revealed that those drinking the vitamin D fortified milk experienced significant improvements in insomnia scores compared to those consuming regular milk. Additionally, quality of life assessments showed positive changes for both fortified and unfortified milk groups. However, the yogurt groups did not demonstrate significant benefits, indicating that while fortified dairy has potential, yogurt may not be as effective in this context.

In conclusion, incorporating fortified low-fat milk into our diets could help ease insomnia symptoms and enhance life satisfaction, although yogurt did not show the same promise.
Read More
8
Vitamin D3 improves adolescent insomnia
High-dose Vitamin D Supplementation and Improvement in Cognitive Abilities, Insomnia, and Daytime Sleepiness in Adolescent Girls.
Focused insights on vitamin D3
We studied how high-dose vitamin D3 supplementation might affect insomnia in adolescent girls. Over nine weeks, 940 participants received a weekly dose of 50,000 IU of vitamin D3 while we tracked changes in their sleep patterns.

Interestingly, we observed a notable reduction in insomnia rates after the treatment. The number of girls reporting insomnia dropped from 15.0% to 11.3%, indicating that this vitamin can potentially improve sleep quality.

We also noticed a slight decrease in daytime sleepiness, with cases falling from 15.6% to 14.7%. Furthermore, those experiencing both insomnia and sleepiness saw a decline from 8.0% to 6.1%.

These findings suggest that high-dose vitamin D can play a significant role in alleviating sleep issues among adolescent girls. However, further studies are needed to see if these effects are consistent across diverse age and gender groups.
Read More
9
Vitamin D improves insomnia symptoms
Efficacy of low-fat milk and yogurt fortified with encapsulated vitamin D on improvement in symptoms of insomnia and quality of life: Evidence from the SUVINA trial.
Moderate relevance due to context
We aimed to understand how vitamin D, specifically in the form of 1,500 IU nano-encapsulated vitamin D fortified in dairy products, could influence insomnia symptoms and quality of life. By conducting a case series, we selected 29 adults suffering from insomnia, particularly those with abdominal obesity. They were divided into four groups receiving different treatments over the course of 10 weeks: fortified low-fat milk, unfortified simple milk, fortified low-fat yogurt, and unfortified yogurt.

After analyzing the results, we found that participants consuming the vitamin D fortified milk experienced significant improvements in their insomnia symptoms compared to those drinking unfortified milk. However, those consuming fortified or unfortified yogurt showed no notable difference. Additionally, both groups consuming milk—fortified and simple—reported enhanced quality of life, although this was not observed in the yogurt groups.

Overall, our findings suggest that low-fat milk with added vitamin D can be beneficial for alleviating insomnia symptoms and improving quality of life, confirming its potential therapeutic role in sleep disorders.
Read More

Most Useful Reviews

9.5
Insomnia alleviation
Thank you. The quality is excellent with a large quantity. One pill per week over three months boosts immunity and combats depression. If suffering from insomnia, consider a vitamin D test; it might be deficient. Noticeable improvements came after the first pill, enhancing sleep and mood.
Read More
8.8
Insomnia relief
This product stabilises conditions related to insomnia, depression, and stress. The natural ingredients help enhance brain function and improve sleep quality, particularly through GABA, which promotes deeper, more effective sleep.
Read More
8.8
Insomnia management
Omega helps stabilise insomnia and other conditions, offering natural ingredients that reduce stress and enhance concentration and sleep quality through GABA, positively impacting growth hormone release during sleep.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 6 Researches
8.2
  • All Researches
9
Vitamin D improves insomnia symptoms
Efficacy of low-fat milk and yogurt fortified with encapsulated vitamin D on improvement in symptoms of insomnia and quality of life: Evidence from the SUVINA trial.
Moderate relevance due to context
We aimed to understand how vitamin D, specifically in the form of 1,500 IU nano-encapsulated vitamin D fortified in dairy products, could influence insomnia symptoms and quality of life. By conducting a case series, we selected 29 adults suffering from insomnia, particularly those with abdominal obesity. They were divided into four groups receiving different treatments over the course of 10 weeks: fortified low-fat milk, unfortified simple milk, fortified low-fat yogurt, and unfortified yogurt.

After analyzing the results, we found that participants consuming the vitamin D fortified milk experienced significant improvements in their insomnia symptoms compared to those drinking unfortified milk. However, those consuming fortified or unfortified yogurt showed no notable difference. Additionally, both groups consuming milk—fortified and simple—reported enhanced quality of life, although this was not observed in the yogurt groups.

Overall, our findings suggest that low-fat milk with added vitamin D can be beneficial for alleviating insomnia symptoms and improving quality of life, confirming its potential therapeutic role in sleep disorders.
Read More
9
Vitamin D3 effects on insomnia unclear
Soy isoflavones, lactobacilli, Magnolia bark extract, vitamin D3 and calcium. Controlled clinical study in menopause.
Combined treatment complicates results
We conducted a controlled study to understand the effects of vitamin D3, along with other components, on insomnia and other symptoms experienced by menopausal women. Over 24 weeks, participants took either a formulation that included vitamin D3 or a standard calcium and vitamin D3 supplement.

Throughout the study, we tracked various symptoms like insomnia and mood changes. We found that while the formulation containing vitamin D3 showed some promise for addressing hormonal symptoms such as hot flashes and mood disturbances, the specific impact of vitamin D3 on insomnia was not isolated enough to draw definitive conclusions.

Importantly, participants who took the formulation reported improvements in overall well-being and satisfaction compared to those on regular calcium and vitamin D3. However, determining the isolated benefits of vitamin D3 alone remains challenging, as it was part of a broader mix of ingredients aimed at alleviating multiple menopause-related symptoms.

Thus, while our findings highlight the potential benefits of a comprehensive approach, the role of vitamin D3 specifically on insomnia is still uncertain. Further studies would be needed to clarify its effectiveness.
Read More
8
Vitamin D's impact on sleep disorders
Vitamin D deficiency promoting non-24 h sleep-wake disorder: a case report.
Insights on vitamin effectiveness
We explored the case of an emmetropic woman experiencing excessive daytime sleepiness alongside insomnia, which aligned with the criteria for a non-24 h sleep-wake disorder. After traditional treatments failed, we discovered deficiencies in vitamin B12, vitamin D3, and folic acid.

Upon supplementing these nutrients, we observed a restoration of a 24-hour sleep-wake rhythm in the participant. Interestingly, this improvement occurred independently of the natural light-dark cycle, raising questions about the specific impact of vitamin D on sleep patterns.

While our study underscores how addressing vitamin deficiencies can influence sleep, it also leaves us pondering whether vitamin D plays a direct role as an essential factor or if it merely acts as a concurrent indicator of overall health.
Read More
8
Vitamin D benefits for insomnia
Efficacy of low-fat milk and yogurt fortified with encapsulated vitamin D on improvement in symptoms of insomnia and quality of life: Evidence from the SUVINA trial.
Direct study on insomnia treatment
We set out to explore the relationship between vitamin D and insomnia by examining how low-fat milk and yogurt fortified with 1,500 IU of nano-encapsulated vitamin D could improve sleep issues and overall quality of life.

In our analysis, we included adults with abdominal obesity and a history of insomnia, identifying twenty-nine participants through insomnia severity questionnaires. They were split into four groups: one receiving fortified low-fat milk, another with unfortified milk, a third group consuming fortified yogurt, and a fourth with unfortified yogurt. Over a ten-week period, we tracked changes in insomnia symptoms and quality of life.

Our findings revealed that those drinking the vitamin D fortified milk experienced significant improvements in insomnia scores compared to those consuming regular milk. Additionally, quality of life assessments showed positive changes for both fortified and unfortified milk groups. However, the yogurt groups did not demonstrate significant benefits, indicating that while fortified dairy has potential, yogurt may not be as effective in this context.

In conclusion, incorporating fortified low-fat milk into our diets could help ease insomnia symptoms and enhance life satisfaction, although yogurt did not show the same promise.
Read More
8
Vitamin D3 improves adolescent insomnia
High-dose Vitamin D Supplementation and Improvement in Cognitive Abilities, Insomnia, and Daytime Sleepiness in Adolescent Girls.
Focused insights on vitamin D3
We studied how high-dose vitamin D3 supplementation might affect insomnia in adolescent girls. Over nine weeks, 940 participants received a weekly dose of 50,000 IU of vitamin D3 while we tracked changes in their sleep patterns.

Interestingly, we observed a notable reduction in insomnia rates after the treatment. The number of girls reporting insomnia dropped from 15.0% to 11.3%, indicating that this vitamin can potentially improve sleep quality.

We also noticed a slight decrease in daytime sleepiness, with cases falling from 15.6% to 14.7%. Furthermore, those experiencing both insomnia and sleepiness saw a decline from 8.0% to 6.1%.

These findings suggest that high-dose vitamin D can play a significant role in alleviating sleep issues among adolescent girls. However, further studies are needed to see if these effects are consistent across diverse age and gender groups.
Read More

User Reviews

USERS' SCORE
Good
Based on 6 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Insomnia alleviation
Thank you. The quality is excellent with a large quantity. One pill per week over three months boosts immunity and combats depression. If suffering from insomnia, consider a vitamin D test; it might be deficient. Noticeable improvements came after the first pill, enhancing sleep and mood.
Read More
8.8
Insomnia relief
This product stabilises conditions related to insomnia, depression, and stress. The natural ingredients help enhance brain function and improve sleep quality, particularly through GABA, which promotes deeper, more effective sleep.
8.8
Insomnia management
Omega helps stabilise insomnia and other conditions, offering natural ingredients that reduce stress and enhance concentration and sleep quality through GABA, positively impacting growth hormone release during sleep.
8
Insomnia improvement
Very beautiful. The quality is excellent, with carefully selected ingredients. A weekly dose strengthens bones and aids absorption. Take with a meal containing fats, preferably in the morning, as it may cause insomnia.
8.8
Insomnia control
The quantity is reasonable, and I've increased the dose. I take it in the morning with breakfast to avoid insomnia, as advised by a doctor. The packaging is excellent.
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